Vue笔记_06(less引入,菜单点击路由跳转)

1)引入less(npm官网查看less版本)

npm i less@4.1.2

npm i lessloader@6.1.0

改菜单样式(CommonAside.vue):

在el-menu标签加入:

background-color="#545c64" text-color="#fff" active-text-color="#ffd04b"

加入样式(CommonAside.vue):

<!-- 整个左侧菜单样式菜单(高度改为100vh,改H3的样式) -->
<style lang="less" scoped>
.el-menu {
    height: 100vh;
    h3 {
        color: #fff;
        text-align: center;
        line-height: 48px;
        font-size: 16px;
        font-weight: 400;
    }
}
</style>

在App.vue,加入:

<style lang="less">
html,body,h3 {
  margin: 0;
  padding: 0
}
</style>

在Main.vue加入:

<el-container>
      <el-aside width="200px">
          <common-aside />
      </el-aside>           
<el-container>

2)菜单点击路由跳转

把剩余的页面加路由组件并映射

//1.创建路由组件

//2.将路由和组件映射

加入点击菜单按钮事件:

<el-menu-item @click="clickmenu(item)" v-for="item in noChildren" :key="item.name" :index="item.name">

在method加入点击触发的事件方法:

  clickmenu(item){
            console.log(item);
            this.$router.push(item.path);
        }

结果如下:

 原因在于进入识别的是/,我们需要的初始界面是/home,同时已经在当前路径,再次跳转当前路径会报错。

第一个问题解决方法:

在index.js的routers中加入(当识别为/时,自动去/home):

redirect:'/home',//重定向

 主要代码:

router/index.js

import Vue from 'vue'
import VueRouter from 'vue-router'
import Home from '../views/Home.vue'
import User from '../views/User.vue'
import Main from '../views/Main.vue'
import Mall from '../views/Mall.vue'
import PageOne from '../views/PageOne.vue'
import PageTwo from '../views/PageTwo'
Vue.use(VueRouter)
//1.创建路由组件
//2.将路由和组件映射
//3.创建router实例
const routes = [
    {
        path: '/',//先匹配主路由,再匹配子路由
        component: Main,
        redirect: '/home',//重定向
        children: [
            //子路由
            { path: 'home', component: Home },
            { path: 'user', component: User },
            { path: 'mall', component: Mall },
            { path: 'page1', component: PageOne },
            { path: 'page2', component: PageTwo },

        ]
    }
]
const router = new VueRouter(
    {
        routes//(缩写)相当于routes:routes
    }
)
export default router


CommonAside.vue

<template>

    <el-menu default-active="1-4-1" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose"
        :collapse="isCollapse" background-color="#545c64" text-color="#fff" active-text-color="#ffd04b">
        <h3>通用后台管理</h3>
        <el-menu-item @click="clickmenu(item)" v-for="item in noChildren" :key="item.name" :index="item.name">
            <i :class="`el-icon-${item.icon}`"></i>
            <span slot="title">{{item.label}}</span>
        </el-menu-item>
        <el-submenu v-for="item in hasChildren" :key="item.label" :index="item.label">
            <template slot="title">
                <i :class="`el-icon-${item.icon}`"></i>
                <span slot="title">{{item.label}}</span>
            </template>
            <el-menu-item-group v-for="subItem in item.children" :key="subItem.path">
                <el-menu-item @click="clickmenu(subItem)" :index="subItem.path">{{subItem.label}}</el-menu-item>
            </el-menu-item-group>
        </el-submenu>
    </el-menu>
</template>

<!-- 整个左侧菜单样式菜单(高度改为100vh,改H3的样式) -->
<style lang="less" scoped>
.el-menu {
    height: 100vh;

    h3 {
        color: #fff;
        text-align: center;
        line-height: 48px;
        font-size: 16px;
        font-weight: 400;
    }
}

.el-menu-vertical-demo:not(.el-menu--collapse) {
    width: 200px;
    min-height: 400px;
}
</style>

<script>
export default {
    data() {
        return {
            isCollapse: false,
            menuData: [
                {
                    path: '/',
                    name: 'home',
                    label: '首页',
                    icon: 's-home',
                    url: 'Home/Home',
                },
                {
                    path: '/mall',
                    name: 'mall',
                    label: '商品管理',
                    icon: 'video-play',
                    url: 'MallManage/MallManage',
                },
                {
                    path: '/user',
                    name: 'user',
                    label: '用户管理',
                    icon: 'user',
                    url: 'UserManage/UserManage',
                },
                {
                    label: '其他',
                    icon: 'location',
                    children: [
                        {
                            path: '/page1',
                            name: 'page1',
                            label: '页面1',
                            icon: 'setting',
                            url: 'Other/PageOne',
                        },
                        {
                            path: '/page2',
                            name: 'page2',
                            label: '页面2',
                            icon: 'setting',
                            url: 'Other/PageTwo',
                        }
                    ]
                }
            ]
        };
    },
    methods: {
        handleOpen(key, keyPath) {
            console.log(key, keyPath);
        },
        handleClose(key, keyPath) {
            console.log(key, keyPath);
        },
        clickmenu(item) {
            console.log(item);
            this.$router.push(item.path);
        }

    },
    computed: {
        //没有子菜单
        noChildren() {
            return this.menuData.filter(item => !item.children)
        },
        //有子菜单
        hasChildren() {
            return this.menuData.filter(item => item.children)
        }
    }
}
</script>